autocde2.0/app/Models/ProjectPlan.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class ProjectPlan extends Model
{
    use HasFactory;

    protected $table = 'project_plan';

    protected $guarded = ['id'];

    public $timestamps = false;
}